Textile apparatus



March 21, 1939. R. w. MNCRIEFF ET Al. 2,151,327

TEXTILE APPARATUS Filed sept. 1e, 1957 Patented Mar.- 21, 1939 PATENT oFFlcE 2,151,327 TEXTILE lairaaa'rus Robert Wighton Moncriei and Frank Brentnall Hill, Spondon, near Derby, England, assignors to Celanese Corporation of America, a corporation of Delaware l Application September 16, 1937, Serial No. 164,098

In Great Britain September 25, 1936 3 Claims.

y This invention relates to textile apparatus and particularly to yarn Winding apparatus in which yarn is traversed along a cheese or like package by means ofV a slotted or' grooved rotary traverse drum.

Accordingto the present invention apparatus ,for winding a cross-wound package of yarn comprises a rotatable drum provided with an endless traverse slot, said slot being provided at at least one of the positions on the drum where it changes direction with an extension in its outer wall lengthwise of the drum and a pointed member on its inner wall opposite to said extension so that the yarn drawn across the face of the drum r passes into the recess formed by said extension to be engaged by said pointed member and be automatically carried into said traverse slot. With advantage, the pointed member may be undercut to facilitate the entry of the yarn into the slot.

. The traverse drum may have its slot formed by mounting two complementary portions of a hollow cylinder upon a rotatable shaft, saidportions being so cut as to form a slot into which the yarn drops, and at one or both positions where a change oi traverse direction takes place, one of the portions has its face cut away to form the extension of the slot.

The invention is particularly advantageous as j applied to a rotary traverse drum of small diameter that itself is traversed lengthwise of the package so as to give to the yarn a small cross wind that gradually moves from end to end of the package. Such an arrangement is particularly adapted to high speed winding of yarn, the self-threading construction of the drum enabling the winding operation to be readily commenced in spite of the necessarily high rate of rotation of the drum in high speed winding. The invention will now be described in greater detail with reference to the accompanying drawing in which Fig. 1 is a plan view of the device; n Fig. 2 is a side elevation of the device shown in Fig; 1; y

Fig.y 3 is a sectional view oi' the device shown in Fig. 1 taken on the lines 3 3; and

Fig. 4 illustrates the device in use in cross winding a bobbin.

Referring to Figs. 1-3, a yarn traversing drumconsists of two members I, 2secured to a rotatable shaft 3 by means of set screws l, l. The members I and 2 are formed with inclined faces slightly spaced apart so as to form an endless slot- 5. At the positions where the traverse changes direction the slot 5 is extended lengthwise of the drum members I and 2 to form a V-shaped extension 6 in the surface of the traverse drum. The wall of the slot opposite the extension forms a pointed member 1, the end of which is undercut as shown in Fig. 2.

Fig. 4 shows the device in operation in cross winding a bobbin. The non-rotatable guide 8 which conducts the yarn to the slot 5 between the traverse drum members I and 2 is slowly traversed with the shaft 3 to which the drum members I, 2 are secured along the length of the bobbin 9, a rapid traverse also being effected by the rotating traverse drum members I and 2 as they pass along the length of the bobbin.

Theyarn II is caused by the rotation of the members I, 2 to be rapidly traversed from end to end of the slot 5, and the slow traverse of the members I, 2 causes the eld of traverse to move gradually from one' end of the bobbin 9 to the other, the yarn thus being applied to the bobbin as a series of cross-wound layers. Any suitable cam or like means (not shown) provides for the slow traversing of the shaft 3 carrying the members I, 2.

On commencing winding, the yarn I I which is already secured to the bobbin 9 and therefore under'tension, is drawn across the face of the traverse drum members I and 2 and on continued rotation thereof lies across the extension 6 as shown-in Fig. 3 so as to pass below the pointed member 1 which engages it and carries it into the traverse slot 5. The yarn passes between the drum members to bear against the centre shaft 3. 'The undercutting of the pointed member 1 assists in carrying the yarn down into the slot. In this way the engaging of the yarn with the traverse slot is entirely automatic.

Having described our invention, what we desire to secure by Letters Patent isz- 1. Apparatus for winding a cross-wound package of yarn, comprising a rotatable drum provided with an endless traverse slot, said slot being provided at at least one of the positions on the drum where it changes direction with an extension in its outer wall lengthwise of the drumv ,and a pointed member on its inner wall opposite t'o said extension so that the yarn drawn across the face of the drum passes into the recess formed by said extension to be engaged by said pointed memberand to be automatically carried into said slot.

2. Apparatus according to claim 1, wherein the pointed member on the inner wall of the slot is undercut.

3. Apparatus ior winding a cross-wound package of yarn, comprising a rotatable drum, said drum comprising two complementary portionsof a hollow cylinder mounted upon a rotatable shaft so as to provide an endless traverse slot, one of the portions havngits face c ut away to form an extension of the slot at at least one position where a change of traverse direction takes place,

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tension to be engaged by said pointed member v5 and to be automatically carried into said slot.

ROBERT W'IGHTON MONCRIEFF. 4:FRANK BREN'I'NALLHIIJ... 

